<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link href="static/css/bootstrap.min.css" rel="stylesheet" type="text/css"/>
    <link href="static/css/components.css" rel="stylesheet" type="text/css"/>
    <link href="static/css/login.css" rel="stylesheet" type="text/css"/>
    <script src="static/css/jquery-1.11.0.min.js" type="text/javascript"></script>
</head>
<body class="login">
<div class="content">
    <h3 class="form-title">商品详情</h3>
    <div id="promoStartDateContainer" class="form-group">
        <label style="color:blue" id="promoStatus" class="control-label"></label>
        <div>
            <label style="color:red" class="control-label" id="promoStartDate" />
        </div>
    </div>
    <div class="form-group">
        <div>
            <label class="control-label" id="title" />
        </div>
    </div>

    <div class="form-group">
        <label class="control-label">商品描述</label>
        <div>
            <label class="control-label" id="description" />
        </div>
    </div>
    <div id="normalPriceContainer" class="form-group">
        <label class="control-label">价格</label>
        <div>
            <label class="control-label" id="price" />
        </div>
    </div>
    <div id="promoPriceContainer" class="form-group">
        <label style="color:red" class="control-label">秒杀价格</label>
        <div>
            <label style="color:red" class="control-label" id="promoPrice" />
        </div>
    </div>
    <div class="form-group">
        <div>
            <img style="width:200px;height:auto" id="imgUrl"/>
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">库存</label>
        <div>
            <label class="control-label" id="stock" />
        </div>
    </div>
    <div class="form-group">
        <label class="control-label">销量</label>
        <div>
            <label class="control-label" id="sales" />
        </div>
    </div>
    <div class="form-actions">
        <button class="btn blue" id="createorder" type="submit">
            下单
        </button>
    </div>
    </div>
</div>

</body>
<script>
    function getParam(paramName) {
        paramValue = "", isFound = !1;
        if (this.location.search.indexOf("?") == 0 && this.location.search.indexOf("=") > 1) {
            arrSource = unescape(this.location.search).substring(1, this.location.search.length).split("&"), i = 0;
            while (i < arrSource.length && !isFound) arrSource[i].indexOf("=") > 0 &&
            arrSource[i].split("=")[0].toLowerCase() == paramName.toLowerCase() && (paramValue = arrSource[i].split("=")[1], isFound = !0), i++
        }
        return paramValue == "" && (paramValue = null),paramValue
    }
    var g_itemVO={};
    jQuery(document).ready(function () {
        //获取商品详情
        $.ajax({
            type:"GET",
            url:"http://localhost:8080/item/get",
            data:{
                "id":getParam("id"),
            },
            xhrFields:{
                withCredentials:true
            },
            success:function (data) {
                if(data.status=="success"){
                    g_itemVO=data.data;
                    reloadDom();
                    //定时器
                    setInterval(reloadDom,1000);
                }else{
                    alert("获取信息失败，原因为"+data.data.errMsg);
                }
            },
            error:function (data) {
                alert("获取信息失败，原因为"+data.responseText);
            }
        });

        //下单请求
        $("#createorder").on("click",function () {
            $.ajax({
                type:"POST",
                contentType:"application/x-www-form-urlencoded",
                url:"http://localhost:8080/order/createorder",
                data:{
                    "itemId":g_itemVO.id,
                    "amount":1,
                    "promoId":g_itemVO.promoId
                },
                xhrFields:{
                    withCredentials:true
                },
                success:function (data) {
                    if(data.status=="success"){
                        alert("下单成功");
                        window.location.reload();
                    }else{
                        alert("下单失败，原因为"+data.data.errMsg);
                        if (data.data.errCode==20003){
                            window.location.href="login.html";
                        }
                    }
                },
                error:function (data) {
                    alert("下单失败，原因为"+data.responseText);
                }
            });
        });


    });

    function reloadDom() {
        $("#title").text(g_itemVO.title);
        $("#description").text(g_itemVO.description);
        $("#stock").text(g_itemVO.stock);
        $("#price").text(g_itemVO.price);
        $("#imgUrl").attr("src",g_itemVO.imgUrl);
        $("#sales").text(g_itemVO.sales);
        if (g_itemVO.promoStatus == 1){
            //秒杀活动还未开始
            //倒计时
            var startTime= g_itemVO.startDate.replace(new RegExp("-","gm"),"/");
            //时间不会弄可以去查一些文档
            startTime=(new Date(startTime)).getTime();
            var nowTime =Date.parse(new Date());
            var delta=(startTime-nowTime)/1000;

            if (delta<=0){
                //活动开始了
                g_itemVO.promoStatus = 2;
                reloadDom();
            }
            $("#promoStartDate").text("秒杀活动将于： "+g_itemVO.startDate+" 开始售卖 倒计时："+delta+"秒");
            $("#promoPrice").text(g_itemVO.promoPrice);

            //活动还没开始不能下单
            $("#createorder").attr("disabled",true);

        }else  if (g_itemVO.promoStatus == 2){
            //秒杀活动正在进行中
            $("#promoStartDate").text("秒杀活动正在进行中");
            $("#promoPrice").text(g_itemVO.promoPrice);

            $("#createorder").attr("disabled",false);
            //要想操作哪个标签就给它价格id，通过id操作它
            $("#normalPriceContainer").hide();

        }

    }

</script>
</html>